La fuerza y el movimiento (Forces and Motion)

The US president is the face of the United States to the rest of the world. However, he or she doesn’t have unlimited power within the country. The president has certain powers given by the Constitution, including the ability to make treaties, appoint some important government officials, and veto laws. Readers learn the many duties of the president in simple, clear language appropriate for both younger readers and older readers looking for a succinct review of the topic. Fact boxes supplement the main content with important details about checks and balances, amendments, and more that affect...

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

A foundered Victorian ship looking for the fabled Northwest Passage holds a secret in its icy grave... When Dirk Pitt of NUMAr is almost blown to pieces in a lab explosion, he suspects sabotage. The lab in question belongs to a scientist hoping to use a rare mineral to combat greenhouse gases - but who would want to destroy our one chance to save the planet? However, there are those who will do anything to control such a valuable prize. Pitt's investigations take him to the Arctic in search of a clue to the origins of this precious mineral. There he and NUMAr colleague Al Giordino must battle ...

¿Qué tan preparado estás para criar a tu bebé durante sus primeros meses de vida? Pocas cosas pueden comprarse con los primeros meses de vida de un bebé, pues son los que tendrán el mayor impacto en su desarrollo e infancia. Sin embargo, tanto los padres primerizos como los veteranos concuerdan en que el primer año de vida de un bebé es de las etapas más difíciles de enfrentar. Con esta guía, aprenderás lo siguiente: Cómo alimentar a tu bebé apropiadamente para promover su desarrollo y salud en su primer año de vida. Cómo lograr que tu bebé tenga buenos hábitos de sueño y...

En este libro ilustrado para niños, se presentan 7 oraciones en rima, una para cada día de la semana.

A lift-the-flap book showing milestones in a baby's development during pregnancy and the mother's experiences as it grows.